2 lines of players, one in front of the basket. The other by the sideline.
Basketballs will be in the line in front of the basket. Players in this line will throw the ball up at the backboard, jump as high as they can to rebound the ball.
Once they land, they will do a forward pivot and throw a overhead pass to the outlet line on the side.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.